Proc. Amer. Acad. Arts 19: 25. 1883.
Annuals, 1–15 cm. Stems erect to spreading or ascending. Leaf blades obovate to spatulate, 7–20 mm, sometimes 3-lobed, ultimate margins entire, plane (apices ± rounded), faces ± woolly. Heads usually borne singly. Peduncles 1–3 cm. Involucres broadly campanulate, 4–6 mm diam. Phyllaries 5–10, distinct. Ray florets 5–10; laminae usually cream or yellow, sometimes white with red veins, 3–4 mm. Disc florets 20–30; corollas 2–3 mm (tubes cylindric, throats funnelform, gradually dilated, lobes glandular; anther appendages subulate, not glandular). Cypselae ± 2 mm; pappi usually of 6–10 ± oblong scales 0.4–0.8 mm, rarely 0. 2n = 10 + 0–1 I or 0–3 B.
Phenology: Flowering Dec–Jul.
Habitat: Sandy or gravelly openings, creosote-bush or sagebrush scrublands, Joshua Tree or pinyon-juniper woodlands, or chaparral
Elevation: 30–2400 m
Ariz., Calif., Nev., Utah, Mexico (Baja California).